It looks like apple removed some GL support in the version of OS X you are using, which is too bad. You will need to edit src/util/Rmakefile and remove the program "glrad" from the PROGS= setting near the top. Then, rerun "rmake install" in that directory.
You didn't include all of your compile listing, so it's difficult to know why rpict is not found, but did you remember to do as it suggested at the end and add "/Applications/radiance/ray/bin" to your PATH variable? I don't know why you decided to put everything there rather than /usr/local, but in any case, the shell won't find commands unless it knows where to look for them.
From: zhekong <firstname.lastname@example.org>
Subject: [Radiance-general] Question concerning installing Radiance in Mac
Date: May 13, 2015 9:10:03 AM PDT
I’m starting to learn Radiance and tried to install it in Mac. I followed the video of installation online and got errors in attachment. I ran a test and got another error in the second attachment.
Could someone let me know how I should fix it?
Thank you in advance.